JPH05508819A - ポリヒドロキシ酸フィルム - Google Patents
ポリヒドロキシ酸フィルムInfo
- Publication number
- JPH05508819A JPH05508819A JP91512895A JP51289591A JPH05508819A JP H05508819 A JPH05508819 A JP H05508819A JP 91512895 A JP91512895 A JP 91512895A JP 51289591 A JP51289591 A JP 51289591A JP H05508819 A JPH05508819 A JP H05508819A
- Authority
- JP
- Japan
- Prior art keywords
- film
- ocr
- polymer
- acid
- carbon atoms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920001273 Polyhydroxy acid Polymers 0.000 title claims description 38
- 150000001261 hydroxy acids Chemical group 0.000 claims description 45
- 229920000642 polymer Polymers 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 31
- 239000004014 plasticizer Substances 0.000 claims description 29
- 125000004432 carbon atom Chemical group C* 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 230000009477 glass transition Effects 0.000 claims description 11
- 239000000178 monomer Substances 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 claims description 9
- 238000009998 heat setting Methods 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 5
- 125000002015 acyclic group Chemical group 0.000 claims description 4
- 150000007513 acids Chemical class 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 238000010128 melt processing Methods 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 4
- 230000001568 sexual effect Effects 0.000 claims 1
- 239000010408 film Substances 0.000 description 95
- 239000000047 product Substances 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 7
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical class CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 7
- 238000004806 packaging method and process Methods 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 description 6
- 229920006254 polymer film Polymers 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 235000014655 lactic acid Nutrition 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 3
- 230000003301 hydrolyzing effect Effects 0.000 description 3
- 239000004310 lactic acid Substances 0.000 description 3
- 150000002596 lactones Chemical class 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- -1 Ron-caprolactone Chemical compound 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 229920006158 high molecular weight polymer Polymers 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 229960000380 propiolactone Drugs 0.000 description 2
- 229920006300 shrink film Polymers 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 125000004434 sulfur atom Chemical group 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229940061720 alpha hydroxy acid Drugs 0.000 description 1
- 150000001280 alpha hydroxy acids Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- VEZXCJBBBCKRPI-UHFFFAOYSA-N beta-propiolactone Chemical compound O=C1CCO1 VEZXCJBBBCKRPI-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 239000013627 low molecular weight specie Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- DQGSJTVMODPFBK-UHFFFAOYSA-N oxacyclotridecan-2-one Chemical compound O=C1CCCCCCCCCCCO1 DQGSJTVMODPFBK-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0049—Heat shrinkable
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Formation Of Insulating Films (AREA)
Abstract
Description
Claims (9)
- 1.(a)以下の成分を含むポリマー組成物を溶融処理する: (I)以下からなる群より選択される少なくとも1つのヒドロキシ酸構成部分を 含む約92から約99.9重量%までのポリヒドロキシ酸ポリマー: (i)(OCR′R′′COOCR′R′′CO)q;(ii)[O(CR′R ′′)nCO]p;(iii)(OCR′R′′CR′R′′OCR′R′′C O)r;(iv)(OCR′R′′CR′R′′OCR′R′′CR′R′′C O)s;および(v)(i)−(iv)と非ヒドロキシ酸コモノマーとのコポリ マー ここで、nは2、4または5であり;p、q、rおよびsは整数であり、これら の合計は約350から5,000までの範囲であり;R′およびR′′は水素、 1から12の炭素原子を含むヒドロカルビル、および1から12の炭素原子を含 む置換ヒドロカルビルからなる群より選択される少なくとも1つの材料を含む、 および (II)モノマーのヒドロキシ酸、モノマーのヒドロキシ酸の環状ダイマー、モ ノマーのヒドロキシ酸の非環状ダイマーおよび450までの分子量を有するモノ マーのヒドロキシ酸のオリゴマーからなる群より選択される少なくとも1つの可 塑剤を含む約0.10から約8重量%までの可塑剤;(b)前記組成物をフィル ムに成形する;(c)前記フィルムを、配向をポリヒドロキシ酸のガラス転移温 度より高く組成物の融点よりも低い温度で行い、フィルムを前記フィルムの最初 の機械方向および横方向の寸法の少なくとも2倍に延伸することにより、二軸配 向する;工程を有する、自己支持性のフィルムの製造方法。
- 2.(a)ポリマー材料を、融液を十分に機械的に撹拌しながら、溶融処理して 、以下の成分を含むポリマー組成物を得る: (I)以下より選択される少なくとも1つのヒドロキシ酸構成部分を含む約92 から約99.9重量%までのポリヒドロキシ酸ポリマー: (i)(OCR′R′′COOCR′R′′CO)q;(ii)[O(CR′R ′′)NCO];(iii)(OCR′R′′CR′R′′OCR′R′′CO )r;(iv)(OCR′R′′CR′R′′OCR′R′′CR′R′′CO )s;および(v)(i)−(iv)と非ヒドロキシ酸コモノマーとのコポリマ ー ここで、nは2、4または5であり;p、q、rおよびsは整数であり、これら の合計は約350から5,000までの範囲であり;R′およびR′′は水素、 1から12の炭素原子を含むヒドロカルビル、または1から12の炭素原子を含 む置換ヒドロカルビルであり、自己支持性のフィルムを生じさせるのに十分な分 子量を有する、および(II)モノマーのヒドロキシ酸、モノマーのヒドロキシ 酸の環状ダイマー、モノマーのヒドロキシ酸の非環状ダイマーおよび450まで の分子量を有するモノマーのヒドロキシ酸のその他のオリゴマーからなる約0. 10から約8重量%までの可塑剤; (b)この組成物を、約0.05から2mmまでの均一な厚さのフィルムに成形 する; (c)このように製造されたフィルムを、ポリヒドロキシ酸のガラス転移温度よ り高く組成物の融点よりも低い温度で、これをその最初の機械方向および横方向 の寸法の少なくとも2倍に延伸することにより、二軸配向する;(d)このよう にして製造された二軸配向フィルムを、フィルムを拘束下に維持しながら、ポリ マーのガラス転移温度より高いがポリマーの融点よりも低い温度まで1から12 0分間加熱することにより、ヒートセッティングする;工程を有する、自己支持 性のフィルムの製造方法。
- 3.前記ポリヒドロキシ酸ポリマーが、約50,000から約60,000まで の平均分子量を有する請求項1または2の方法。
- 4.R′が水素からなり、R′′がメチル基からなる請求項1または2の方法。
- 5.前記ポリヒドロキシ酸ポリマーのポリマー鎖中の炭素原子が、R−およびS −コンフィギュレーションからなる群より選択されるコンフィギュレーションか らなる請求項4の方法。
- 6.ヒートセットの持続が、約1から80秒間なされる請求項2の方法。
- 7.(I)以下からなる群より選択される少なくとも1つのヒドロキシ酸構成部 分を含む約92から約99.9重量%までのポリヒドロキシ酸ポリマー: (i)(OCR′R′′COOCR′R′′CO)q;(ii)[O(CR′R ′′)nCO]p;(iii)(OCR′R′′CR′R′′OCR′R′′C O)r;(iv)(OCR′R′′CR′R′′OCR′R′′CR′R′′C O)s;および(v)(i)−(iv)と非ヒドロキシ酸コモノマーとのコポリ マー ここで、nは2、4または5であり;p、q、rおよびsは整数であり、これら の合計は約350から5,000までの範囲であり;R′およびR′′は水素、 1から12の炭素原子を含むヒドロカルビル、および1から12の炭素原子を含 む置換ヒドロカルビルからなる群より選択される少なくとも1種を含む、および (II)モノマーのヒドロキシ酸、モノマーのヒドロキシ酸の環状ダイマー、モ ノマーのヒドロキシ酸の非環状ダイマーおよび450までの分子量を有するモノ マーのヒドロキシ酸のオリゴマーからなる群より選択される少なくとも1つの可 塑剤を含む約0,10から約8重量%までの可塑剤を含む自己支持性のポリマー フィルム。
- 8.前記フィルムが、100℃で5%より小さい収縮値を有する請求項7のフィ ルム。
- 9.前記フィルムが、80MPaから200MPaまでの引張強さおよび30か ら140%までの破断伸びを有する請求項7のフィルム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US552,551 | 1990-07-16 | ||
US07/552,551 US5076983A (en) | 1990-07-16 | 1990-07-16 | Polyhydroxy acid films |
PCT/US1991/004307 WO1992001548A1 (en) | 1990-07-16 | 1991-06-25 | Polyhydroxy acid films |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05508819A true JPH05508819A (ja) | 1993-12-09 |
JP2945758B2 JP2945758B2 (ja) | 1999-09-06 |
Family
ID=24205821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3512895A Expired - Lifetime JP2945758B2 (ja) | 1990-07-16 | 1991-06-25 | ポリヒドロキシ酸フィルム |
Country Status (8)
Country | Link |
---|---|
US (1) | US5076983A (ja) |
EP (1) | EP0544701B1 (ja) |
JP (1) | JP2945758B2 (ja) |
AU (1) | AU8289691A (ja) |
IE (1) | IE912457A1 (ja) |
MX (1) | MX9100213A (ja) |
NZ (1) | NZ238942A (ja) |
WO (1) | WO1992001548A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07207041A (ja) * | 1994-01-11 | 1995-08-08 | Mitsubishi Plastics Ind Ltd | ポリ乳酸系フイルム |
JPH07205278A (ja) * | 1994-01-11 | 1995-08-08 | Mitsubishi Plastics Ind Ltd | ポリ乳酸系重合体延伸フイルムの製造方法 |
JPH07256753A (ja) * | 1994-03-28 | 1995-10-09 | Mitsubishi Plastics Ind Ltd | 熱収縮性ポリ乳酸系フイルム |
JPH09187863A (ja) * | 1996-01-11 | 1997-07-22 | Mitsubishi Plastics Ind Ltd | 熱収縮性ポリ乳酸系フィルムおよびその製造方法 |
JP2003002984A (ja) * | 2002-06-14 | 2003-01-08 | Mitsubishi Plastics Ind Ltd | ポリ乳酸系フィルム |
WO2008035762A1 (fr) | 2006-09-21 | 2008-03-27 | Asahi Kasei Home Products Corporation | Procédé de production d'un film d'acide polylactique |
JP2019131720A (ja) * | 2018-01-31 | 2019-08-08 | 大阪瓦斯株式会社 | 可塑剤及びそれを含む樹脂組成物 |
Families Citing this family (71)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5180765A (en) * | 1988-08-08 | 1993-01-19 | Biopak Technology, Ltd. | Biodegradable packaging thermoplastics from lactides |
US5444113A (en) * | 1988-08-08 | 1995-08-22 | Ecopol, Llc | End use applications of biodegradable polymers |
US5424346A (en) * | 1988-08-08 | 1995-06-13 | Ecopol, Llc | Biodegradable replacement of crystal polystyrene |
US5767222A (en) * | 1988-08-08 | 1998-06-16 | Chronopol, Inc. | Degradable polydioxaneone-based materials |
US5252642A (en) * | 1989-03-01 | 1993-10-12 | Biopak Technology, Ltd. | Degradable impact modified polyactic acid |
US5502158A (en) * | 1988-08-08 | 1996-03-26 | Ecopol, Llc | Degradable polymer composition |
US6323307B1 (en) | 1988-08-08 | 2001-11-27 | Cargill Dow Polymers, Llc | Degradation control of environmentally degradable disposable materials |
US6027677A (en) * | 1988-08-08 | 2000-02-22 | Chronopol, Inc. | Films containing poly(hydroxy acid)s |
US5216050A (en) * | 1988-08-08 | 1993-06-01 | Biopak Technology, Ltd. | Blends of polyactic acid |
US5334520A (en) * | 1990-05-25 | 1994-08-02 | Center For Innovative Technology | Production of poly-beta-hydroxybutyrate in transformed escherichia coli |
US5518907A (en) * | 1989-06-07 | 1996-05-21 | Center For Innovative Technology | Cloning and expression in Escherichia coli of the Alcaligenes eutrophus H16 poly-beta-hydroxybutyrate biosynthetic pathway |
US5227415A (en) * | 1990-04-06 | 1993-07-13 | Director-General Of Agency Of Industrial Science And Technology | Biodegradable plastic composition |
EP0544097A1 (de) * | 1991-10-23 | 1993-06-02 | Boehringer Ingelheim Kg | Halbfeste Mischungen aus Oligomeren und/oder Polymeren auf der Basis von Milchsäure, Verfahren zur deren Herstellung und deren Verwendung als resorbierbare Implantate |
US5160467A (en) * | 1991-12-05 | 1992-11-03 | Joseph R. DeGeorge | Method for producing biodegradable packaging material |
US6005067A (en) | 1992-01-24 | 1999-12-21 | Cargill Incorporated | Continuous process for manufacture of lactide polymers with controlled optical purity |
US5247058A (en) * | 1992-01-24 | 1993-09-21 | Cargill, Incorporated | Continuous process for manufacture of lactide polymers with controlled optical purity |
US5258488A (en) * | 1992-01-24 | 1993-11-02 | Cargill, Incorporated | Continuous process for manufacture of lactide polymers with controlled optical purity |
US5142023A (en) * | 1992-01-24 | 1992-08-25 | Cargill, Incorporated | Continuous process for manufacture of lactide polymers with controlled optical purity |
US6326458B1 (en) | 1992-01-24 | 2001-12-04 | Cargill, Inc. | Continuous process for the manufacture of lactide and lactide polymers |
US5247059A (en) * | 1992-01-24 | 1993-09-21 | Cargill, Incorporated | Continuous process for the manufacture of a purified lactide from esters of lactic acid |
JP3297068B2 (ja) | 1992-02-06 | 2002-07-02 | 三井化学株式会社 | 収縮ラベル用フィルム |
US5281691A (en) * | 1992-06-19 | 1994-01-25 | Eastman Kodak Company | Poly(3-hydroxyalkanoates) |
KR100209818B1 (ko) * | 1992-09-04 | 1999-07-15 | 사또 아끼오 | 분해성점착필름 및 분해성수지조성물 |
CA2144310A1 (en) * | 1992-09-22 | 1994-03-31 | Richard G. Sinclair | Degradation control of environmentally degradable disposable materials |
NZ256967A (en) | 1992-10-02 | 1997-04-24 | Cargill Inc | Fabric formed from a melt-stable lactide polymer composition and uses thereof |
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-
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-
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- 1991-06-25 WO PCT/US1991/004307 patent/WO1992001548A1/en active IP Right Grant
- 1991-06-25 AU AU82896/91A patent/AU8289691A/en not_active Abandoned
- 1991-06-25 JP JP3512895A patent/JP2945758B2/ja not_active Expired - Lifetime
- 1991-06-25 EP EP91913883A patent/EP0544701B1/en not_active Expired - Lifetime
- 1991-07-12 NZ NZ238942A patent/NZ238942A/xx unknown
- 1991-07-15 MX MX9100213A patent/MX9100213A/es unknown
- 1991-07-15 IE IE245791A patent/IE912457A1/en unknown
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH07207041A (ja) * | 1994-01-11 | 1995-08-08 | Mitsubishi Plastics Ind Ltd | ポリ乳酸系フイルム |
JPH07205278A (ja) * | 1994-01-11 | 1995-08-08 | Mitsubishi Plastics Ind Ltd | ポリ乳酸系重合体延伸フイルムの製造方法 |
JPH07256753A (ja) * | 1994-03-28 | 1995-10-09 | Mitsubishi Plastics Ind Ltd | 熱収縮性ポリ乳酸系フイルム |
JPH09187863A (ja) * | 1996-01-11 | 1997-07-22 | Mitsubishi Plastics Ind Ltd | 熱収縮性ポリ乳酸系フィルムおよびその製造方法 |
JP2003002984A (ja) * | 2002-06-14 | 2003-01-08 | Mitsubishi Plastics Ind Ltd | ポリ乳酸系フィルム |
WO2008035762A1 (fr) | 2006-09-21 | 2008-03-27 | Asahi Kasei Home Products Corporation | Procédé de production d'un film d'acide polylactique |
JP2019131720A (ja) * | 2018-01-31 | 2019-08-08 | 大阪瓦斯株式会社 | 可塑剤及びそれを含む樹脂組成物 |
Also Published As
Publication number | Publication date |
---|---|
US5076983A (en) | 1991-12-31 |
NZ238942A (en) | 1993-03-26 |
WO1992001548A1 (en) | 1992-02-06 |
EP0544701B1 (en) | 2002-09-11 |
IE912457A1 (en) | 1992-01-29 |
EP0544701A4 (en) | 1993-07-14 |
JP2945758B2 (ja) | 1999-09-06 |
EP0544701A1 (en) | 1993-06-09 |
MX9100213A (es) | 1992-02-28 |
AU8289691A (en) | 1992-02-18 |
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